Fuel supply structure of gasoline engine for plug-in hybrid drive

Abstract

The invention discloses a plug-in hybrid drive gasoline engine fuel supply structure, and relates to the technical field of gasoline engines, the plug-in hybrid drive gasoline engine fuel supply structure comprises an outer shell, an oil supply mechanism, an adjustable drive mechanism, a mixing mechanism and a gas supply mechanism; the device has the advantages of being reasonable and simple in structure, low in production cost and convenient to install, all the components operate cooperatively, fuel oil and air are filtered through the oil filter and the air filter respectively, and the cleanliness of the fuel is guaranteed; the transmission ratio is accurately adjusted by means of the adjusting transmission mechanism, then the fuel oil and air conveying amount is changed, the requirements of an engine for combustible mixed gas under different working conditions can be met, and accurate supply is achieved; according to the mixing mechanism, fuel oil and air are fully stirred and mixed through the stirring shaft and the stirring rod, uniform combustible mixed gas is formed and sprayed to an engine air cylinder through the oil sprayer in a proper state, the combustion efficiency of an engine is improved, and stable operation and performance exertion are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of gasoline engines, and in particular to a fuel supply structure for a plug-in hybrid drive gasoline engine. Background Art

[0002] Amidst increasingly stringent energy and environmental demands, plug-in hybrid vehicles (PHEVs), with their combined capabilities of pure electric and fuel-powered operation, have become a key development direction in the automotive industry. The fuel supply structure of a gasoline engine, a key component for efficient engine operation, directly impacts the vehicle's power output, fuel economy, and emissions. Existing fuel supply structures for plug-in hybrid gasoline engines often have problems such as difficulty in accurately adjusting the fuel-air mixture ratio and poor coordination between components. Traditional structures are unable to flexibly and accurately adjust the fuel and air supply when responding to different engine operating conditions, resulting in the concentration of the combustible mixture being difficult to meet the engine's requirements. This not only reduces the engine's combustion efficiency, but may also cause increased fuel consumption and excessive pollutant emissions. In addition, some fuel supply structures have defects such as complex component connections, high production costs, and inconvenient installation and maintenance, making it difficult to meet the modern automotive industry's pursuit of high efficiency, economy, and environmental protection. Therefore, there is an urgent need for a fuel supply structure with a reasonable structure, precise adjustment, and controllable costs to improve the overall performance of plug-in hybrid gasoline engines. Summary of the Invention

[0003] The purpose of the present invention is to provide a fuel supply structure for a plug-in hybrid gasoline engine in order to solve the above problems, which solves the problems that the existing fuel supply structure is difficult to accurately adjust the fuel and air mixing ratio, has poor component coordination, complex structure and high cost, resulting in low engine combustion efficiency, high fuel consumption and excessive emissions.

[0004] In order to solve the above problems, the present invention provides a technical solution: a fuel supply structure for a plug-in hybrid gasoline engine, comprising an outer shell, an oil supply mechanism, an adjustable drive mechanism, a mixing mechanism and an air supply mechanism; the oil supply mechanism is arranged inside the left side of the outer shell; the adjustable drive mechanism is arranged inside the center of the outer shell, and the left side of the adjustable drive mechanism is connected to the oil supply mechanism; the mixing mechanism is arranged inside the center of the lower side of the outer shell, the upper side of the mixing mechanism is connected to the lower side of the adjustable drive mechanism, and the left side inlet of the mixing mechanism is connected to the lower side outlet of the oil supply mechanism; the air supply mechanism is arranged inside the right side of the outer shell, the left side of the air supply mechanism is connected to the right side of the adjustable drive mechanism, and the lower side outlet of the air supply mechanism is connected to the right side inlet of the mixing mechanism.

[0005] Preferably, the specific structure of the oil supply mechanism includes an oil inlet pipe, an oil filter and an oil pump mechanism; the oil filter is fixedly connected to the interior of the upper left side of the outer shell, and the upper inlet of the oil filter is connected to the oil inlet pipe; the oil pump mechanism is arranged inside the lower left side of the outer shell, the upper inlet of the oil pump mechanism is connected to the lower outlet of the oil filter, the lower outlet of the oil pump mechanism is connected to the left inlet of the mixing mechanism, and the right side of the oil pump mechanism is connected to the left shaft end of the adjustable drive mechanism.

[0006] Preferably, the specific structure of the oil pump mechanism includes an oil chamber, an impeller, a connecting shaft and a one-way valve; the oil chamber is arranged inside the left side of the outer shell, the center of the oil chamber is movably connected to the connecting shaft, and the outside of the connecting shaft is fixedly connected to the impeller, the upper inlet of the oil chamber is connected to the lower outlet of the oil filter, and the lower outlet of the oil chamber is connected to the inlet of the one-way valve; the right side shaft end of the connecting shaft is connected to the left side shaft end of the adjustable driving mechanism; the right side outlet of the one-way valve is connected to the left side inlet of the mixing mechanism.

[0007] Preferably, the specific structure of the adjustable drive mechanism includes motor 1, spline shaft, transmission disc 1, adjustment transmission mechanism and transmission disc 2; motor 1 is fixedly connected to the top of the outer shell; the spline shaft is movably connected inside the center of the outer shell, and the upper center of the spline shaft is fixedly connected to the output shaft of motor 1; transmission disc 1 is movably connected to the left side of the center of the outer shell; transmission disc 2 is movably connected to the right side of the center of the outer shell; the adjustment transmission mechanism is fixedly connected to the lower side of the center of the outer shell, the upper outside of the adjustment transmission mechanism is connected to transmission disc 1 and transmission disc 2, and the upper inside of the adjustment transmission mechanism is connected to the spline shaft.

[0008] Preferably, the specific structure of the adjusting transmission mechanism includes a transmission wheel, a connecting sleeve, a telescopic block, a screw, a guide hole seat, a motor 2, a driving gear and a driven gear; the guide hole seat is fixedly connected to the lower side of the central interior of the outer shell, the lower right side of the guide hole seat is fixedly connected to the motor 2, and the driving gear is fixedly connected to the output shaft of the left side of the motor 2; the left and right sides of the transmission wheel are respectively connected to the transmission disk 1 and the transmission disk 2, the spline hole arranged in the center of the transmission wheel is connected to the spline shaft, the center of the lower side of the transmission wheel is fixedly connected with the connecting sleeve, and the outside of the connecting sleeve is movably connected to the upper side of the telescopic block; the outside of the telescopic block is vertically movably connected to the central interior of the guide hole seat, and the central interior of the telescopic block is located on the outside of the spline shaft; the screw is movably connected to the right side of the guide hole seat, the lower end of the screw is fixedly connected to the driven gear, and the driven gear is connected to the driving gear, and the screw is connected to the vertical threaded hole arranged on the right side of the telescopic block.

[0009] Preferably, the second motor is a servo motor or a stepper motor.

[0010] Preferably, the specific structure of the mixing mechanism includes a mixing chamber, a stirring shaft, a stirring rod, an output pipe and an injector; the mixing chamber is arranged in the central interior of the lower side of the outer shell, the center of the mixing chamber is movably connected to the stirring shaft, and the upper side of the stirring shaft is fixedly connected to the lower shaft end of the adjustable driving mechanism; several stirring rods are fixedly connected to the outside of the stirring shaft; the injector inlet is connected to the central outlet of the lower side of the mixing chamber through the output pipe.

[0011] Preferably, the specific structure of the air supply mechanism includes an air filter, a connecting pipe and an air pump mechanism; the air pump mechanism is arranged inside the right side of the outer shell, and the lower outlet of the air pump mechanism is connected to the right side inlet of the mixing mechanism; the air filter outlet is connected to the upper side inlet of the air pump mechanism through a connecting pipe.

[0012] Preferably, the specific structure of the air pump mechanism includes an air cavity, two impellers, two connecting shafts and two one-way valves; the air cavity is arranged inside the right side of the outer shell, the center of the air cavity is movably connected to the two connecting shafts, and the outside of the two connecting shafts is fixedly connected to the two impellers, and the left side of the two connecting shafts is fixedly connected to the right side shaft end of the adjustable driving mechanism, the lower side outlet of the air cavity is connected to the upper side inlet of the two one-way valves, and the lower side outlet of the two one-way valves is connected to the right side inlet of the mixing mechanism.

[0013] The beneficial effects of the present invention are as follows: (1) The present invention has the characteristics of reasonable and simple structure, low production cost and easy installation. The various components work together to filter the fuel and air respectively through the oil filter and air filter to ensure the cleanliness of the fuel. (2) The present invention utilizes an adjustable driving mechanism to drive the operation of the oil supply mechanism and the air supply mechanism, and generates a pressure difference through the impeller to achieve efficient transportation of fuel and air, thereby ensuring stable fuel supply. (3) The present invention uses the adjustment transmission mechanism to accurately adjust the transmission ratio, thereby changing the fuel and air delivery amount, which can meet the demand for combustible mixture under different engine operating conditions and achieve precise supply. (4) The mixing mechanism of the present invention fully mixes the fuel and air through the stirring shaft and the stirring rod to form a uniform combustible mixture, which is then injected into the engine cylinder by the injector in a suitable state, thereby improving the engine combustion efficiency and ensuring stable operation and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 for Figure 1 sectional view of .

[0016] Figure 3 It is a structural diagram of the oil supply mechanism.

[0017] Figure 4It is a structural diagram of the oil pump mechanism.

[0018] Figure 5 Schematic diagram of the structure of the adjustable drive mechanism.

[0019] Figure 6 It is a structural diagram of the adjustment transmission mechanism.

[0020] Figure 7 Schematic diagram of the structure of the hybrid mechanism.

[0021] Figure 8 It is a structural diagram of the gas supply mechanism.

[0022] Figure 9 It is a structural diagram of the air pump mechanism.

[0023] 1-Outer shell; 2-Oil supply mechanism; 3-Adjustable drive mechanism; 4-Mixing mechanism; 5-Air supply mechanism; 21-Oil inlet pipe; 22-Oil filter; 23-Oil pump mechanism; 231-Oil chamber; 232-Impeller 1; 233-Connecting shaft; 234-One-way valve 1; 31-Motor 1; 32-Spline shaft; 33-Drive disc 1; 34-Adjustable drive mechanism; 35-Drive disc 2; 341-Drive wheel; 342-Connecting shaft Connector; 343-telescopic block; 344-screw; 345-guide hole seat; 346-motor 2; 347-driving gear; 348-driven gear; 41-mixing chamber; 42-stirring shaft; 43-stirring rod; 44-output pipe; 45-injector; 51-air filter; 52-connecting pipe; 53-air pump mechanism; 531-air chamber; 532-impeller 2; 533-connecting shaft 2; 534-check valve 2. DETAILED DESCRIPTION

[0024] like Figure 1 and Figure 2 As shown, this specific embodiment adopts the following technical solution: a fuel supply structure for a plug-in hybrid gasoline engine, comprising an outer shell 1, an oil supply mechanism 2, an adjustable drive mechanism 3, a mixing mechanism 4 and an air supply mechanism 5; the oil supply mechanism 2 is arranged inside the left side of the outer shell 1; the adjustable drive mechanism 3 is arranged inside the center of the outer shell 1, and the left side of the adjustable drive mechanism 3 is connected to the oil supply mechanism 2; the mixing mechanism 4 is arranged inside the center of the lower side of the outer shell 1, the upper side of the mixing mechanism 4 is connected to the lower side of the adjustable drive mechanism 3, and the left side inlet of the mixing mechanism 4 is connected to the lower side outlet of the oil supply mechanism 2; the air supply mechanism 5 is arranged inside the right side of the outer shell 1, the left side of the air supply mechanism 5 is connected to the right side of the adjustable drive mechanism 3, and the lower side outlet of the air supply mechanism 5 is connected to the right side inlet of the mixing mechanism 4.

[0025] like Figure 3As shown, the specific structure of the oil supply mechanism 2 includes an oil inlet pipe 21, an oil filter 22 and an oil pump mechanism 23; the oil filter 22 is fixedly connected to the interior of the upper left side of the outer shell 1, and the upper inlet of the oil filter 22 is connected to the oil inlet pipe 21; the oil pump mechanism 23 is arranged inside the lower left side of the outer shell 1, the upper inlet of the oil pump mechanism 23 is connected to the lower outlet of the oil filter 22, the lower outlet of the oil pump mechanism 23 is connected to the left inlet of the mixing mechanism 4, and the right side of the oil pump mechanism 23 is connected to the left shaft end of the adjustable drive mechanism 3.

[0026] like Figure 4 As shown, the specific structure of the oil pump mechanism 23 includes an oil chamber 231, an impeller 232, a connecting shaft 233 and a one-way valve 234; the oil chamber 231 is arranged inside the left side of the outer shell 1, and the center of the oil chamber 231 is movably connected to the connecting shaft 233, and the outside of the connecting shaft 233 is fixedly connected to the impeller 232, the upper inlet of the oil chamber 231 is connected to the lower outlet of the oil filter 22, and the lower outlet of the oil chamber 231 is connected to the inlet of the one-way valve 234; the right shaft end of the connecting shaft 233 is connected to the left shaft end of the adjustable driving mechanism 3; the right outlet of the one-way valve 234 is connected to the left inlet of the mixing mechanism 4.

[0027] like Figure 5 As shown, the specific structure of the adjustable drive mechanism 3 includes a motor 1 31, a spline shaft 32, a transmission disc 1 33, an adjustment transmission mechanism 34 and a transmission disc 2 35; the motor 1 31 is fixedly connected to the top of the outer shell 1; the spline shaft 32 is movably connected to the central interior of the outer shell 1, and the upper center of the spline shaft 32 is fixedly connected to the output shaft of the motor 1 31; the transmission disc 1 33 is movably connected to the left side of the central interior of the outer shell 1; the transmission disc 2 35 is movably connected to the right side of the central interior of the outer shell 1; the adjustment transmission mechanism 34 is fixedly connected to the lower side of the central interior of the outer shell 1, the upper outer side of the adjustment transmission mechanism 34 is connected to the transmission disc 1 33 and the transmission disc 2 35, and the upper inner side of the adjustment transmission mechanism 34 is connected to the spline shaft 32.

[0028] like Figure 6As shown, the specific structure of the adjustment transmission mechanism 34 includes a transmission wheel 341, a connecting sleeve 342, a telescopic block 343, a screw 344, a guide hole seat 345, a second motor 346, a driving gear 347 and a driven gear 348; the guide hole seat 345 is fixedly connected to the lower side of the central interior of the outer shell 1, the lower right side of the guide hole seat 345 is fixedly connected to the second motor 346, and the driving gear 347 is fixedly connected to the output shaft on the left side of the second motor 346; the left and right sides of the transmission wheel 341 are respectively connected to the transmission disk 1 33 and the transmission disk 2 35, and the spline hole set in the center of the transmission wheel 341 is connected to the spline The transmission wheel 341 is connected to the shaft 32, and a connecting sleeve 342 is fixedly connected to the center of the lower side of the transmission wheel 341, and the outer part of the connecting sleeve 342 is movably connected to the inner part of the upper side of the telescopic block 343; the outer part of the telescopic block 343 is vertically movably connected to the central interior of the guide hole seat 345, and the central interior of the telescopic block 343 is located outside the spline shaft 32; the screw 344 is movably connected to the right side of the guide hole seat 345, and the lower end of the screw 344 is fixedly connected to a driven gear 348, and the driven gear 348 is connected to the driving gear 347, and the screw 344 is connected to the vertical threaded hole provided on the right side of the telescopic block 343.

[0029] The second motor 346 is a servo motor or a stepper motor.

[0030] like Figure 7 As shown, the specific structure of the mixing mechanism 4 includes a mixing chamber 41, a stirring shaft 42, a stirring rod 43, an output pipe 44 and an injector 45; the mixing chamber 41 is arranged in the central interior of the lower side of the outer shell 1, and the center of the mixing chamber 41 is movably connected to the stirring shaft 42, and the upper side of the stirring shaft 42 is fixedly connected to the lower shaft end of the adjustable driving mechanism 3; a plurality of stirring rods 43 are fixedly connected to the outside of the stirring shaft 42; the inlet of the injector 45 is connected to the central outlet of the lower side of the mixing chamber 41 through the output pipe 44.

[0031] like Figure 8 As shown, the specific structure of the air supply mechanism 5 includes an air filter 51, a connecting pipe 52 and an air pump mechanism 53; the air pump mechanism 53 is arranged inside the right side of the outer shell 1, and the lower outlet of the air pump mechanism 53 is connected to the right side inlet of the mixing mechanism 4; the outlet of the air filter 51 is connected to the upper inlet of the air pump mechanism 53 through the connecting pipe 52.

[0032] like Figure 9As shown, the specific structure of the air pump mechanism 53 includes an air cavity 531, an impeller 532, a connecting shaft 533 and a one-way valve 534; the air cavity 531 is arranged inside the right side of the outer shell 1, and the center of the air cavity 531 is movably connected to the connecting shaft 533, and the outside of the connecting shaft 533 is fixedly connected to the impeller 532, and the left side of the connecting shaft 533 is fixedly connected to the right side shaft end of the adjustable driving mechanism 3, the lower side outlet of the air cavity 531 is connected to the upper side inlet of the one-way valve 534, and the lower side outlet of the one-way valve 534 is connected to the right side inlet of the mixing mechanism 4.

[0033] The use status of the present invention is as follows: the present invention has a reasonable and simple structure, low production cost, and easy installation. When the plug-in hybrid drive gasoline engine starts working, the various components of the entire fuel supply structure work together. In the fuel supply link, the fuel enters the fuel supply mechanism 2 through the oil inlet pipe 21, and is first filtered by the oil filter 22 to remove impurities in the fuel to ensure the cleanliness of the fuel. Subsequently, the fuel enters the oil chamber 231 of the oil pump mechanism 23. At this time, the motor 131 in the adjustable drive mechanism 3 is started, driving the spline shaft 32 to rotate. The spline shaft 32 drives the connecting shaft 233 to rotate through the transmission wheel 341 and the transmission plate 133, and the connecting shaft 233 drives the impeller 1 232 to rotate in the oil chamber 231. The rotation of the impeller 1 232 makes the oil chamber 23 1 forms a pressure difference, sucking the fuel from the upper inlet of the oil chamber 231 and pressurizing it to the one-way valve 1 234 through the lower outlet, and then delivering it to the left inlet of the mixing chamber 41 of the mixing mechanism 4 through the outlet of the one-way valve 1 234, completing the fuel delivery process. In the gas supply link, the external air is first filtered by the air filter 51 to remove dust and other impurities in the air. The filtered air enters the air chamber 531 of the air pump mechanism 53 through the connecting pipe 52. Similarly, driven by the adjustable driving mechanism 3, the spline shaft 32 drives the connecting shaft 2 533 to rotate through the transmission wheel 341 and the transmission plate 2 35, and the connecting shaft 2 533 drives the impeller 2 532 to rotate. The rotation of the impeller 2 532 generates pressure in the air chamber 53-1, which pushes the air from the gas chamber 53-1 to the gas chamber 53-2. The air is sucked in through the upper inlet of the chamber 531 and is pressed into the one-way valve 2 534 through the lower outlet, and is then transported to the right inlet of the mixing chamber 41 of the mixing mechanism 4 through the outlet of the one-way valve 2 534, completing the air transportation process. At the same time, in the mixing link, in the mixing chamber 41, the stirring shaft 42 is driven by the spline shaft 32 of the adjustable driving mechanism 3 to rotate, and the stirring rod 43 outside the stirring shaft 42 rotates accordingly. The fuel delivered from the oil supply mechanism 2 and the air delivered from the air supply mechanism 5 meet in the mixing chamber 41. The stirring action of the stirring rod 43 makes the fuel and air fully mixed to form a uniform combustible mixture. The mixed combustible mixture passes through the central outlet at the lower side of the mixing chamber 41 and is transported to the injector 45 through the output pipe 44. When the ratio of the combustible mixture needs to be adjusted, the fuel and air are mixed together. During adjustment, the second motor 346 in the adjustable drive mechanism 3 is started. The second motor 346 acts as a servo motor or a stepper motor, which can accurately control the rotation angle and speed. The second motor 346 drives the driving gear 347 to rotate. The driving gear 347 engages with the driven gear 348, thereby driving the screw 344 to rotate. The rotation of the screw 344 causes the telescopic block 343 to move vertically inside the center of the guide hole seat 345. The movement of the telescopic block 343 changes the position of the transmission wheel 341 through the connecting sleeve 342, thereby adjusting the transmission ratio of the transmission disk 1 33 and the transmission disk 2 35. The change in the transmission ratio causes the rotation speed of the connecting shaft 233 and the connecting shaft 2 533 to change, thereby respectively adjusting the fuel delivery amount of the oil pump mechanism 23 and the air delivery amount of the air pump mechanism 53.To meet the engine's requirements for combustible mixture under different operating conditions, the injector 45 receives the mixed combustible mixture and, according to the engine control unit's instructions, injects the combustible mixture into the engine cylinder at an appropriate pressure and spray form, providing fuel for the engine's combustion work. During operation, the entire plug-in hybrid gasoline engine fuel supply structure works closely together, achieving efficient mixing and precise supply of fuel and air through precise power transmission and regulation, ensuring stable engine operation and performance.

[0034] The control method of the present invention is through manual startup or control through existing automation technology. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices. Therefore, the present invention will no longer explain the control method and wiring layout in detail.

[0035] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0036] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two elements or an interaction relationship between two elements. Unless otherwise clearly specified, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the invention. Without departing from the spirit and scope of the invention, the invention may be subject to various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the accompanying claims and their equivalents.

Claims

1. A fuel supply structure for a plug-in hybrid gasoline engine, characterized by: It comprises an outer shell (1), an oil supply mechanism (2), an adjustable driving mechanism (3), a mixing mechanism (4) and an air supply mechanism (5); The oil supply mechanism (2) is arranged inside the left side of the outer shell (1); The adjustable drive mechanism (3) is arranged in the center of the outer shell (1), and the left side of the adjustable drive mechanism (3) is connected to the oil supply mechanism (2); The mixing mechanism (4) is arranged in the central interior of the lower side of the outer shell (1), the upper side of the mixing mechanism (4) is connected to the lower side of the adjustable driving mechanism (3), and the left inlet of the mixing mechanism (4) is connected to the lower outlet of the oil supply mechanism (2); The air supply mechanism (5) is arranged inside the right side of the outer shell (1), the left side of the air supply mechanism (5) is connected to the right side of the adjustable drive mechanism (3), and the lower side outlet of the air supply mechanism (5) is connected to the right side inlet of the mixing mechanism (4).

2. The plug-in hybrid gasoline engine fuel supply structure according to claim 1, characterized in that: The specific structure of the oil supply mechanism (2) includes an oil inlet pipe (21), an oil filter (22) and an oil pump mechanism (23); The oil filter (22) is fixedly connected to the interior of the upper left side of the outer shell (1), and the upper inlet of the oil filter (22) is connected to the oil inlet pipe (21); The oil pump mechanism (23) is arranged inside the lower left side of the outer shell (1), the upper inlet of the oil pump mechanism (23) is connected to the lower outlet of the oil filter (22), the lower outlet of the oil pump mechanism (23) is connected to the left inlet of the mixing mechanism (4), and the right side of the oil pump mechanism (23) is connected to the left shaft end of the adjustable drive mechanism (3).

3. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 2, characterized in that: The specific structure of the oil pump mechanism (23) includes an oil chamber (231), an impeller (232), a connecting shaft (233) and a one-way valve (234); The oil chamber (231) is provided inside the left side of the outer shell (1), the center of the oil chamber (231) is movably connected to a connecting shaft (233), and the outside of the connecting shaft (233) is fixedly connected to an impeller 1 (232), the upper inlet of the oil chamber (231) is connected to the lower outlet of the oil filter (22), and the lower outlet of the oil chamber (231) is connected to the inlet of a one-way valve 1 (234); The right shaft end of the connecting shaft (233) is connected to the left shaft end of the adjustable driving mechanism (3); The right side outlet of the one-way valve (234) is connected to the left side inlet of the mixing mechanism (4).

4. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 1, characterized in that: The specific structure of the adjustable driving mechanism (3) includes a motor 1 (31), a spline shaft (32), a transmission disc 1 (33), an adjustment transmission mechanism (34) and a transmission disc 2 (35); The motor 1 (31) is fixedly connected to the top of the outer shell (1); The spline shaft (32) is movably connected to the center of the outer shell (1), and the upper center of the spline shaft (32) is fixedly connected to the output shaft of the motor (31); The transmission disc 1 (33) is movably connected to the left side of the center interior of the outer shell (1); The second transmission disc (35) is movably connected to the right side of the center interior of the outer shell (1); The adjusting transmission mechanism (34) is fixedly connected to the lower side of the central interior of the outer shell (1); the outer side of the upper side of the adjusting transmission mechanism (34) is connected to the first transmission disc (33) and the second transmission disc (35); and the inner side of the upper side of the adjusting transmission mechanism (34) is connected to the spline shaft (32).

5. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 4, characterized in that: The specific structure of the regulating transmission mechanism (34) includes a transmission wheel (341), a connecting sleeve (342), a telescopic block (343), a screw (344), a guide hole seat (345), a second motor (346), a driving gear (347) and a driven gear (348); The guide hole seat (345) is fixedly connected to the lower side of the central interior of the outer shell (1), the lower right side of the guide hole seat (345) is fixedly connected to the second motor (346), and the left output shaft of the second motor (346) is fixedly connected to the driving gear (347); The left and right sides of the transmission wheel (341) are respectively connected to the transmission disc 1 (33) and the transmission disc 2 (35); the spline hole provided in the center of the transmission wheel (341) is connected to the spline shaft (32); a connecting sleeve (342) is fixedly connected to the center of the lower side of the transmission wheel (341), and the outer portion of the connecting sleeve (342) is movably connected to the inner portion of the upper side of the telescopic block (343); The outside of the telescopic block (343) is vertically movably connected to the central interior of the guide hole seat (345), and the central interior of the telescopic block (343) is located outside the spline shaft (32); The screw rod (344) is movably connected to the right side of the guide hole seat (345), and the lower end of the screw rod (344) is fixedly connected to a driven gear (348), and the driven gear (348) is connected to the driving gear (347). The screw rod (344) is connected to a vertical threaded hole provided on the right side of the telescopic block (343).

6. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 5, characterized in that: The second motor (346) is a servo motor or a stepper motor.

7. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 1, characterized in that: The specific structure of the mixing mechanism (4) includes a mixing chamber (41), a stirring shaft (42), a stirring rod (43), an output pipe (44) and an injector (45); The mixing chamber (41) is provided in the central interior of the lower side of the outer shell (1); a stirring shaft (42) is movably connected to the center of the mixing chamber (41), and the upper side of the stirring shaft (42) is fixedly connected to the lower side shaft end of the adjustable driving mechanism (3); The stirring shaft (42) is externally fixedly connected to a plurality of stirring rods (43); The inlet of the fuel injector (45) is connected to the central outlet on the lower side of the mixing chamber (41) through the output pipe (44).

8. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 1, characterized in that: The specific structure of the air supply mechanism (5) includes an air filter (51), a connecting pipe (52) and an air pump mechanism (53); The air pump mechanism (53) is arranged inside the right side of the outer shell (1), and the lower side outlet of the air pump mechanism (53) is connected to the right side inlet of the mixing mechanism (4); The outlet of the air filter (51) is connected to the upper inlet of the air pump mechanism (53) via a connecting pipe (52).

9. The fuel supply structure for a plug-in hybrid gasoline engine according to claim 8, characterized in that: The specific structure of the air pump mechanism (53) includes an air cavity (531), a second impeller (532), a second connecting shaft (533) and a second one-way valve (534); The air cavity (531) is arranged inside the right side of the outer shell (1), the center of the air cavity (531) is movably connected to the second connecting shaft (533), and the outside of the second connecting shaft (533) is fixedly connected to the second impeller (532), and the left side of the second connecting shaft (533) is fixedly connected to the right side shaft end of the adjustable driving mechanism (3), the lower side outlet of the air cavity (531) is connected to the upper side inlet of the second one-way valve (534), and the lower side outlet of the second one-way valve (534) is connected to the right side inlet of the mixing mechanism (4).

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